After five years of keeping his feelings hidden, high‑school student Taiju Ooki finally feels prepared to tell Yuzuriha Ogawa how he loves her, hoping for a shared future. But just as he starts his confession, a dazzling green flash engulfs the planet and turns every human into stone. The light"s origin remains unknown, leaving the world in stunned silence.
Millennia later, Taiju wakes to a world where modern civilization has vanished and nature has reclaimed the land, with skyscrapers overgrown by vines. In this stone‑filled landscape he meets only one other living person: his science‑obsessed friend Senkuu, who has been alive for a few months and is eager to rebuild. Taiju discovers that Senkuu plans an ambitious project—to restore society entirely through science, using advanced technology salvaged from the ruins. Together, Taiju"s strength and Senkuu"s intellect form a powerful duo, and they soon find a way to resurrect the petrified by harnessing latent energy within the stone.
Yet Senkuu"s grand scheme is jeopardized when those who awaken question his beliefs and propose alternative paths. Throughout it all, the cause of humanity"s stone‑state remains a mystery that drives their quest.
